How can i improve performance in interview

Sir, i had finished my ipcc group1 in nov14, i had given nearly more than five interviews and mailed my resumes to many and called many hundreds of firms..but still was unable to find suitable firm to pursue my articleship. as I was suffering from partial deafness i was unable to hear what interviewer was saying properly and my applications were being rejected. Is there any way through which i can improve my performance? suggestions and advice are most welcomed. Thanking you. Hyderabad